Punch die



Dec. 8, 1931. RE, PAGE 1,835,424

PUNCH DIE Filed June '7, 1930 :HA Flt-3.3. w. V

M FIGA. Y l/2 I 10 05 I 7 /ll .,z

Has.

l6 FIG] I? 10 I4 anxientoz Patented Dec. 8, 1931 RALPH E. PAGE, OF BINGH'AMTON, NEW CHINE COMPANY, OF E NDICGTT', NEW

YORK, ASSIGNOIR TO THE TABULATIN'G- KA- YOBK, A GOR-POBATIOIN" NEW JERSEY PUNCH nIE Application filed June 7, lean. Serial No. 459,782.

This invention relates to a. punch die and more particularly to a die for receiving punches of rectangular cross-section. The invention is applicable to record perforating machines of the type shown in co-pending application Serial No. 450,130, filed May 6, 1930.

In the tabulating machine art it has been the practice to punch so-called tabulating cards or sheets which usually, for convenience in reading are provided with a number of index point designations on the face thereof disposed in columnar arrangement. Gang punching machines are also provided in which a plurality of punches are disposedto cooperate with all the index point positions of the cards to record information thereon in the various columns simultaneously. Where circular holes are employed the construction of the punch die is a comparatively simple process. The employment of rectangular punches involves the provision of a die having similarly shaped openings which where a single plate is used, is costly to 1nanufacture.

It is therefore one object of the invention to provide a punch die, of built-up construction which is low in cost and easily constructed.

Another object is to provide a punch die having rectangular openings formed by cutting cross-slots in a die block.

Further and other objects and advantages 7 will be hereinafter set forth in the acconr' panying specification and claims, and shown in the drawings, which by way of illustration show what is now considered to be the preferred embodiment of the invention.

Fig. 1 is an isometric view of a portion of a punch die showing the arrangement of the openings.

Fig. 2 is a section of thedie before opera.- tions are commenced upon it.

Fig. 3 is a section of the die after a slot has been cut therein.

Fig. 4 is a section of the die after a second slotting operation.

Fig. 5 is a section of the die after a crossslotting'operation.

' limited therefore by the scope Figfle'is' a detail tion.

Fig. 7 is a transverse spacing bar in position.

section of a filing operasection showing a The die block 10 is first slotted as in Fig. '3

by a circular cutter 11 into a series of parallel slots 12 extending through the block and terminating as shown. A second cutter 13, having a wider face than cutter 11 is next employed to widen slots 12 to substantially half the depth of the block.

A series of slots His then cut transversely 5 and 6. If dethe two cutters to slots 12 as shown in Figs.

sired, the angle 15 formed by ay be filed away as in Fig. -6.

A plurality of spacer bars 16 are then fitted'into the transverse slots 14 and held therein by reason of a close fit or if desired, they may be prick-punched near their ends to hold them in position. The bars 16 have dependingtabs 1 7 projecting within slots 12, forming thereby rectangular openings extending to the depth of the tabs 17. The effect of widening slotl2 by cutter 13'is to relieve therecta ngular 'opening'so that as the punch cuts a. chip from thecard or other material and forces it to the depth of tab 17, it will fall freely through the widened slot andnotinterfere with subsequent chips or punchin gs.

It is obvious however that the operation of widening slot 12 may be dispensed with if the punch entersto the depth of block 10 and the formation of the die then resolves itself into the cutting of slots 12, and transverse slots 14 and the insertion of spacer bars 16. While I have shown and described and pointed out the fundamental novel features of the invention as applied to a single modification, it will be understood that various omissions and substitutions and changes in the form and details of the device illustrated and in its operation may be made by those skilled in the art without departing from the spirit of the invention. I intend to be of the following claims. l

1. A punch die consisting of a block having a series of parallel slots and a series of parallel bars positioned transversely to said slots to form rectangular openings in said block.

2. A punch die consisting of a block having a series of parallel slots extending through said block and a series of transverse slots, intersecting said parallel slots and bars adapted to be seated within said transverse slots to form rectangular openings in the block.

3. A punch die consisting of a block having a series of parallel slots extending entirely through the material forming said block, and a series of transversely arranged parallel slots extending partially through the material forming the block, and bars seated within said transverse slots to form rectangular openings in the block.

4. A punch diecconsisting of a block having a series of parallel slots extending partly through the material of the block and coinciding with a series of slots of different width extending through the remaining material of the block, a series of transverse slots, and bars seated in said transverse slots to form rectangular openings in the block.

5. A punch die consisting of a block having a series of parallel slots extending partly through the material of the block, a second series of slots of different width coinciding with said first named series of slots, and a series of bars extendingtransversely to said slots, said bars having projections extending transversely into one of said series of slots to form rectangular openings in the block.

6. A punch die consisting of a block having a series of parallel, stepped slots extending entirely through the material of the block, a series of transverse slots extendingpartly through the material of the block and intersecting said first named slots, a plurality of bars seated within said transverse slots and having projections extending into said first named slots to cooperate with the sides thereof to form rectangular openings in the block.

In testimony whereof I hereto afiix my signature.

RALPH E. PAGE. 

